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US 7,452,265 B2Granted
Abrasive article and methods of making same
Assignee3M Innovative Properties Company
InventorsThomas W. Rambosek, Edward J. Woo, Curtis J. Schmidt
Life of this patent
Estimating the term…
Abstract
An abrasive article with an integral dust collection system. The abrasive article comprises a porous abrasive layer with openings, a first filter media with channels, a second filter media, a third filter media with channels, a fourth filter media, and an optional attachment layer. The openings of the porous abrasive layer cooperate with the channels to allow the flow of particles from the abrasive surface to the filter media.
Claims19
An abrasive article comprising:
- a porous abrasive layer having an abrasive surface, the porous abrasive layer comprising a substrate having a first surface, a second surface opposite the first surface, a plurality of abrasive particles affixed to the first surface with at least one binder, and a plurality of openings extending from the abrasive surface to the second surface of the porous abrasive layer;
- a first filter media having a first surface and a second surface opposite the first surface, the first surface of the first filter media proximate the second surface of the porous abrasive layer, the first filter media comprising a plurality of discrete channels formed by a plurality of channel sidewalls, the channels extending from the first surface of the first filter media to the second surface of the first filter media, the first filter media having a height in the range of 0.5 to 10 millimeters;
- a second filter media having a first surface and a second surface opposite the first surface, the first surface of the second filter media proximate the second surface of the first filter media;
- a third filter media having a first surface and a second surface opposite the first surface, the first surface of the third filter media proximate the second surface of the second filter media, the third filter media comprising a plurality of discrete channels formed by a plurality of channel sidewalls, the channels extending from the first surface of the third filter media to the second surface of the third filter media, the third filter media having a height in the range of 0.5 to 10 millimeters;
- and
- a fourth filter media having a first surface and a second surface opposite the first surface, the first surface of the fourth filter media proximate the second surface of the third filter media.
3 more elements
An abrasive article comprising:
- a porous abrasive layer having an abrasive surface, the porous abrasive layer comprising a substrate having a first surface, a second surface opposite the first surface, a plurality of abrasive particles affixed to the first surface with at least one binder, and a plurality of openings extending from the abrasive surface to the second surface of the porous abrasive layer;
- a first filter media having a first surface and a second surface opposite the first surface, the first surface of the first filter media proximate the second surface of the porous abrasive layer, the first filter media comprising a plurality of discrete channels formed by a plurality of channel sidewalls, the channels extending from the first surface of the first filter media to the second surface of the first filter media;
- a second filter media having a first surface and a second surface opposite the first surface, the first surface of the second filter media proximate the second surface of the first filter media;
- a third filter media having a first surface and a second surface opposite the first surface, the first surface of the third filter media proximate the second surface of the second filter media, the third filter media comprising a plurality of discrete channels formed by a plurality of channel sidewalls, the channels extending from the first surface of the third filter media to the second surface of the third filter media;
- a fourth filter media having a first surface and a second surface opposite the first surface, the first surface of the fourth filter media proximate the second surface of the third filter media, and
- an attachment layer affixed to the second surface of the fourth filter media, wherein the attachment layer comprises a loop portion or a hook portion of a two-part mechanical engagement system;
- wherein the second and fourth filter media comprise a nonwoven.
4 more elements
Dependencies are inferred from the claim text.